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參數資料
| 型號： | HT8658 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Voice Recorder (DRAM) |
| 中文描述： | 錄音機體（DRAM） |
| 文件頁數： | 3/15頁 |
| 文件大?。?/td> | 862K |
| 代理商： | HT8658 |
Pad Description
Pad No.
Pad Name
I/O
Internal
Connection
Description
1
AS9
I/O
Pull-High
CMOS
Input:
Output: Address output for DRAM of 1Mb and
column address strobe for DRAM of 256K b
For IC test only
2
AS8
I/O
Pull-High
CMOS
Input:
Output: Address output to DRAM
For IC test only
3
AS7
I/O
Pull-High
CMOS
Input:
Output: Address output to DRAM
For IC test only
4
AS6
I/O
Pull-High
CMOS
Input:
For IC test only
1: For IC test only
0: Not applicable
Output: Address output to DRAM
5
AS5
I/O
Pull-High
CMOS
Input:
DRAM type selection:
1: 256K b (without external pull-low
resistors)
0: 1Mb (with an external pull-low resistor)
Output: Address output to DRAM
6
AS4
I/O
Pull-High
CMOS
Input:
Manual/Auto playback selection:
1: Manual (without external pull-low
resistors)
0: Auto (with an external pull-low resistor)
Output: Address output to DRAM
7,8
AS3,AS2
I/O
Pull-High
CMOS
Input:
DRAM chip number selection (refer to the
functional description)
Output: Address output to DRAM
9,10
AS1,AS0
I/O
Pull-High
CMOS
Input:
Sampling rate selection (refer to the
functional description)
Output: Address output to DRAM
11
VDD
I
—
Positive power supply
12
AIN
I
—
Pre-amplifier input pin
13
AO
O
—
Pre-amplifier output pin
Amplifier gain should be adjusted between AIN and
AO by a resistor.
14
BIAS
I
—
For internal OP bias de-coupling
15
VOUT
O
—
Audio signal output (non-filtered, output directly)
16
FOUT
O
—
Audio signal output through an internal low-pass
filter
17
VSS
I
—
Negative power supply (GND)
HT8658/HT8659
3
26th Sep ’96
相關PDF資料 |
PDF描述 |
|---|---|
| HT86768 | Voice Synthesizer 8-Bit MCU |
| HT86072 | Voice Synthesizer 8-Bit MCU |
| HT86144 | Voice Synthesizer 8-Bit MCU |
| HT86192 | Voice Synthesizer 8-Bit MCU |
| HT86384 | Voice Synthesizer 8-Bit MCU |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT8658A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Solid-State Recorder |
| HT8658B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Solid-State Recorder |
| HT8659 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Voice Recorder (DRAM) |
| HT8659A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Solid-State Recorder |
| HT8659B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Solid-State Recorder |
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